Hanging lamp arm



FIG. 1 is a perspective view of the ornamental design for a hanging lamp arm according to the present invention;

FIG. 2 is a perspective view of the ornamental design for a hanging lamp arm according to the present invention;

FIG. 3 is a right side view of the ornamental design for a hanging lamp arm according to the present invention;

FIG. 4 is a left side view of the ornamental design for a hanging lamp arm according to the present invention;

FIG. 5 is a top view of the ornamental design for a hanging lamp arm according to the present invention;

FIG. 6 is a bottom view of the ornamental design for a hanging lamp arm according to the present invention;

FIG. 7 is a rear view of the ornamental design for a hanging lamp arm according to the present invention; and,

FIG. 8 is a front view of the ornamental design for a hanging lamp arm according to the present invention. 

The ornamental design for a hanging lamp arm, as shown and described herein. 